Workers at the Kansas City Animal Shelter are calling it one of the saddest cases they've ever seen.

A playful pit bull puppy named Forest has a major problem: his front legs aren't quite extended enough. So now the shelter is trying to raise funds to get that corrected.

It'll cost an estimated $6,000 for the surgery.

Although Forest has adapted to getting around, his physical challenges are slowing him down.

"He's just such a happy puppy and he just obviously wants to be around people," Tori Fugate of the KC Pet Project said. "He obviously wants to give love out to everybody he meets and you see him walking like this. You just ache for him because we don't know if that hurts, if he's just gotten used to the pain by now, we don't know how long he's been like this."

Even if Forest does get the surgery, it's going to be a long rehabilitation process before he's able to walk normally.